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  <title>需求</title>

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  <h2 class="title">需求</h2>
  <p class="para">
   In order to use the <acronym title="Simple Network Management Protocol">SNMP</acronym> functions requires installation of the
   <a href="http://www.net-snmp.org/" class="link external">&raquo;&nbsp;Net-SNMP</a> package. SNMPv3
   functions available only when <a href="http://www.openssl.org/" class="link external">&raquo;&nbsp;OpenSSL</a>
   package is installed too.
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  <p class="para">
   On Windows <acronym title="Simple Network Management Protocol">SNMP</acronym> functions are only available on NT and not on Win95/98.
  </p>
  <p class="para">
   Begining with PHP 5.4.0 Net-SNMP version 5.3+ is required for Unix
   installations and Net-SNMP version 5.4+ for Windows.
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